What is ISO 11611?
This Standard applies to clothe meant to safeguard the person wearing it from spattering of various welding technologies simulated limited connection with flame, heat radiation from an electrical arc used for welding and associated processes, which reduces the chances of electric shock by accidental limited connection with working electric conductors at different voltage readings. This Standard applies to the wearer under standard welding conditions.
The ISO 11611 lays down minimum security clothing performance requirements to protect the body of the wearer, including aprons, sleeves based on two grades, which reflect the exposure of two degrees of a splash. It does not cover feet, hands, face or eye-protective requirements–specifications are specified in other international standards.
The safety wearer must be secured against sparks, short contact with fire and the risk of electric shock from short accidental communication with electric conductors must be reduced with EN ISO 11611 approved. In order to obtain maximum protection, the workwear must cover the entire body. The jacket and matching pants are used to do this. We suggest additional protection for arms, hands, and front of the clothes when using welding techniques that produce a lot of sparks. For the purpose of avoiding sparks on the workwear, only a minimum number of pockets and other functions are included in safety apparel approved according to EN ISO 11611, thereby preventing sparks from being trapped.
EN ISO 11611:2007
Clothing for security for soldering and related procedures. This norm involves the measurement of the ability of a garment to protect from fire and radiant heat. The garment is class 1 or class 2 and offers protection against less dangerous techniques and situations. The garment is class 1 or class 2. The specification covers other design requirements, including the requirement to cover closures with compatible fabric flaps, in addition to defining the flame and heat tests performed.
What is EN ISO 11612?
This International Standard sets out the performance of protective clothing made of different materials to protect the body of the wearer from heat and fire except for the face. The only protective clothing to protect the wearer’s head and feet are shoes, caps and over boots within the context of this International Norm. Nevertheless, requirements for the hoods are not given for visor and breathing equipment.
The standard applies in many cases for protective clothing. The product has to be minimally flammable because the user can be exposed to radiant, convective or touch heat or to the molten metal sprinkling. There is no reference to protective clothing as specified by other international norms.
Necessities for fabrics under ISO 11612
To order to meet ISO 11612 standard: the A test and the B, C, D, and E test, the robust tissue must pass two tests to the total. Per test, the fabric’s performance is noted.
- Test A: Flame spread
- Test B: Convective heating
- Test C: Radiant heat
- Test D/E: Molten metal
- Test F: Contact heat
The results of the tests are categorized into performance levels. The minimum protection of the fabric for processing, for example, is level 1. It is not only advisable to check if a textile passes the test, but also how much of the protective clothing for your company is your responsibility.
The jacket, pant and overall should be shielded from the chest, throat, neck, arms, and legs. A 20 cm overlap between the jacket and the pants is expected during all working activities. There should not be direct contact between metal components and the wearer’s clothing. For code letters D and E, further specification requirements apply.
It is important to understand the differing levels of performance, as they are associated with the extent of the risk. In particular, E1 means iron slashing in various amounts from 60 to 120 g and E3 in more than 200 g. The E-test three levels of efficiency inform you about protection for molten splashing iron, in different quantities. Depending on the risk levels of your working environment, you have to choose the best performance standard.
General requirements: thermal resistance at 180 °C: material shall not ignite or melt and shall not shrink more than 5%. The material must satisfy a minimum tearing and abrasion resistance requirement.
That fabric is conducted by the test groups and companies in your region with the optional ISO 13506 certification. Before testing on the manikin, the fabric is washed a couple of times, as washing decreases and makes the fabric less efficacious. The check will take 3 seconds, but if desired, it can proceed and many companies have different records on which to sell their products. However, they must be standard tested in EN ISO 11612. It doesn’t seem to be a huge difference, only a second but one additional second generates another 84 kJ of energy per mtr2/sek. Throughout manufacturing, the temperatures vary between 800 to1000 °C.